Stephan Boyer of MIT faced a real problem – getting around campus without using his legs (which were fine by the way). What he came up with was the Bullet, a self balancing unicycle designed and made by him.
Stephen has provided all the components, schematics and programming code to make your very own, which in total costs around 1000 USD (645 GBP), which he says is an improvement on the price of Trevor Blackwell’s.
The Bullet achieves an amazing 5 miles on a single charge and is small enough to take on buses. Once the rider learns to use it, which is apparently harder than learning regular unicycles, they can get up to 15mph. That doesn’t sound fast, but your opinion will probably change once you’re on a single wheeled bike which has total control of the breaks.
If you’re wondering why these incredible inventions haven’t gone on general sale yet, they have! At least in the USA. Focus Designs sell the SBU, which has a few extras such as a safety system, a better motor and a bigger wheel.
Source: Trend Hunter